US Optics ST-10 Mil GAP FFP Illuminated Reticle 10x37mm Rifle Scope Patented Erector Repositioning Elevation Knob (EREK) with 90 clicks of adjustment per revolution Features a mill radian based reticle exhibiting detailed sub tensions and red illumination with 12 intensity settings Exceptional clarity, resolution and light transmission Rugged type III hard anodizing and bulletproof construction, 30mm tube